WO2011136627A3 - Multiple input multiple output communication system using codebook corresponding to each reporting mode - Google Patents

Multiple input multiple output communication system using codebook corresponding to each reporting mode Download PDF

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Publication number
WO2011136627A3
WO2011136627A3 PCT/KR2011/003272 KR2011003272W WO2011136627A3 WO 2011136627 A3 WO2011136627 A3 WO 2011136627A3 KR 2011003272 W KR2011003272 W KR 2011003272W WO 2011136627 A3 WO2011136627 A3 WO 2011136627A3
Authority
WO
WIPO (PCT)
Prior art keywords
codebook
precoding matrix
matrix indicator
communication system
reporting mode
Prior art date
Application number
PCT/KR2011/003272
Other languages
French (fr)
Other versions
WO2011136627A2 (en
Inventor
Jun Il Choi
Bruno Clerckx
Ki Il Kim
Original Assignee
Samsung Electronics Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Priority to JP2013508987A priority Critical patent/JP6005036B2/en
Priority to CA2797844A priority patent/CA2797844C/en
Priority to AU2011245813A priority patent/AU2011245813B2/en
Priority to EP21188034.9A priority patent/EP3920427B1/en
Priority to RU2012151312/08A priority patent/RU2571554C2/en
Priority to CN201180032776.6A priority patent/CN102959878B/en
Priority to EP11775332.7A priority patent/EP2564518B1/en
Publication of WO2011136627A2 publication Critical patent/WO2011136627A2/en
Publication of WO2011136627A3 publication Critical patent/WO2011136627A3/en
Priority to ZA2012/09092A priority patent/ZA201209092B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0482—Adaptive codebooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

A multiple input multiple output (MIMO) communication system using a first codebook and a second codebook is provided. The first codebook and the second codebook may independently exist, or may exist in a form of an overall codebook in which the first codebook and the second codebook are integrated with each other. A receiver may extract a first precoding matrix indicator from the first codebook, and may extract a second precoding matrix indicator from the second codebook. The receiver may also extract the first precoding matrix indicator and the second precoding matrix indicator from the overall codebook. The first precoding matrix indicator and the second precoding matrix indicator may be fed back to a transmitter. The transmitter may determine a precoding matrix based on the first precoding matrix indicator and the second precoding matrix indicator.
PCT/KR2011/003272 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode WO2011136627A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2013508987A JP6005036B2 (en) 2010-04-30 2011-05-02 Multiple I / O communication system using codebook corresponding to each reporting mode
CA2797844A CA2797844C (en) 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode
AU2011245813A AU2011245813B2 (en) 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode
EP21188034.9A EP3920427B1 (en) 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode
RU2012151312/08A RU2571554C2 (en) 2010-04-30 2011-05-02 Multiple input multiple output (mimo) communication system using codebook corresponding to each reporting mode
CN201180032776.6A CN102959878B (en) 2010-04-30 2011-05-02 Use the multiple-input-multiple-output communication system of the code book corresponding with each report pattern
EP11775332.7A EP2564518B1 (en) 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode
ZA2012/09092A ZA201209092B (en) 2010-04-30 2012-11-30 Multiple input multiple output communication system using codebook correspondding to each reporting mode

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
US32963410P 2010-04-30 2010-04-30
US61/329,634 2010-04-30
US35568110P 2010-06-17 2010-06-17
US61/355,681 2010-06-17
US35676810P 2010-06-21 2010-06-21
US61/356,768 2010-06-21
US37394210P 2010-08-16 2010-08-16
US61/373,942 2010-08-16
US38873610P 2010-10-01 2010-10-01
US61/388,736 2010-10-01
US201061428348P 2010-12-30 2010-12-30
US61/428,348 2010-12-30
KR10-2011-0031200 2011-04-05
KR1020110031200A KR101817724B1 (en) 2010-04-30 2011-04-05 Multiple input multiple output communication system using codebook corresopding to each reporting mode

Publications (2)

Publication Number Publication Date
WO2011136627A2 WO2011136627A2 (en) 2011-11-03
WO2011136627A3 true WO2011136627A3 (en) 2012-03-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/003272 WO2011136627A2 (en) 2010-04-30 2011-05-02 Multiple input multiple output communication system using codebook corresponding to each reporting mode

Country Status (10)

Country Link
US (1) US9876553B2 (en)
EP (2) EP2564518B1 (en)
JP (1) JP6005036B2 (en)
KR (1) KR101817724B1 (en)
CN (2) CN105846878B (en)
AU (1) AU2011245813B2 (en)
CA (1) CA2797844C (en)
RU (1) RU2571554C2 (en)
WO (1) WO2011136627A2 (en)
ZA (1) ZA201209092B (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8848817B2 (en) 2010-04-30 2014-09-30 Texas Instruments Incorporated Transmission modes and signaling for uplink MIMO support or single TB dual-layer transmission in LTE uplink
CN102237975B (en) * 2010-05-04 2013-10-02 华为技术有限公司 Method and device for transmitting pre-coding matrix index (PMI) and pre-coding PMI
US8477663B2 (en) * 2010-06-01 2013-07-02 Samsung Electronics Co., Ltd. Multiple input multiple output communication system and communication method of configuring codebook
CN101902312B (en) * 2010-06-21 2016-02-10 中兴通讯股份有限公司 A kind of channel information acquisition method of many precision and system
WO2012008710A2 (en) * 2010-07-12 2012-01-19 엘지전자 주식회사 Method and device for transmitting/receiving a signal by using a code book in a wireless communication system
US8582527B2 (en) 2011-07-01 2013-11-12 Ofinno Technologies, Llc Hybrid automatic repeat request in multicarrier systems
US8369280B2 (en) 2011-07-01 2013-02-05 Ofinno Techologies, LLC Control channels in multicarrier OFDM transmission
WO2013006379A1 (en) 2011-07-01 2013-01-10 Dinan Esmael Hejazi Synchronization signal and control messages in multicarrier ofdm
CN102938662B (en) * 2011-08-15 2015-09-16 上海贝尔股份有限公司 For the codebook design method of 3D antenna configuration
CN102368698B (en) * 2011-11-10 2014-04-16 电信科学技术研究院 Precoding matrix indicator (PMI) information transmission method and apparatus thereof
US8446844B1 (en) 2011-12-04 2013-05-21 Ofinno Technologies, Llc Handover in multicarrier wireless networks
US9497756B2 (en) 2012-03-25 2016-11-15 Comcast Cable Communications, Llc Base station radio resource management
US9949265B2 (en) 2012-05-04 2018-04-17 Comcast Cable Communications, Llc Control channel in a wireless communication system
CN106603136B (en) 2012-06-14 2022-08-19 华为技术有限公司 Method for determining precoding matrix indication, user equipment and base station evolution node
US9252852B2 (en) * 2012-07-09 2016-02-02 Lg Electronics Inc. Method for transmitting feedback by using codebook in wireless communication system and apparatus for same
CN103795489B (en) * 2012-10-29 2017-05-24 电信科学技术研究院 Method, system and device for transmitting coding indication information and determining precoding matrix
CN107689823B (en) 2012-12-27 2023-10-20 华为技术有限公司 Channel state information feedback method, user equipment and base station
WO2014138525A1 (en) * 2013-03-07 2014-09-12 Nec Laboratories America, Inc. Codebook construction
US9143212B2 (en) 2013-02-25 2015-09-22 Texas Instruments Incorporated Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO
US9755716B2 (en) 2013-03-07 2017-09-05 Nec Corporation Codebook construction
JP6108250B2 (en) 2013-04-03 2017-04-05 ▲ホア▼▲ウェイ▼技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． Method and device for reporting and receiving channel state information
EP3836413B1 (en) * 2013-05-10 2022-07-27 Huawei Technologies Co., Ltd. Method for determining precoding matrix indicator, user equipment, and base station
CN105027457B (en) * 2013-05-10 2018-05-29 华为技术有限公司 Determine method, user equipment and the base station of pre-coding matrix instruction
US20140362940A1 (en) * 2013-06-07 2014-12-11 Nec Laboratories America, Inc. Channel State Information (CSI) Feedback and Subsampling
WO2015018030A1 (en) * 2013-08-08 2015-02-12 华为技术有限公司 Method for determining precoding matrix indicator, receiving device and transmitting device
CN105659508B (en) * 2013-10-18 2019-12-03 高通股份有限公司 For configuration pin to the method and computer readable storage devices of the CSI-RS of 3-D MIMO
CN105379139B (en) 2014-03-24 2019-01-11 华为技术有限公司 Feedback method, method of reseptance and the device of pre-coding matrix instruction
WO2015149250A1 (en) * 2014-03-31 2015-10-08 富士通株式会社 Code book determining device, information feedback device and communication system
EP3163767B1 (en) * 2014-06-26 2021-06-09 LG Electronics Inc. Method for reporting precoding matrix index for high-frequency band communication in wireless communication system, and apparatus therefor
CN106301506B (en) 2015-05-15 2020-03-13 电信科学技术研究院 Codebook subset constraint method and device
CN106487435B (en) * 2015-08-24 2020-03-03 电信科学技术研究院 Method and device for transmitting coding indication information and determining precoding matrix
US10772024B2 (en) 2018-01-12 2020-09-08 At&T Intellectual Property I, L.P. Adaptive multiple antenna transmission scheme for uplink data transmission in wireless communication systems
WO2023077508A1 (en) * 2021-11-08 2023-05-11 Qualcomm Incorporated Uplink codebook and signaling design

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094281A1 (en) * 2006-10-24 2008-04-24 Nokia Corporation Advanced codebook for multi-antenna transmission systems
US20090189812A1 (en) * 2008-01-25 2009-07-30 Samsung Electronics Co., Ltd. System and method for multi-stage antenna training of beamforming vectors
WO2009096708A1 (en) * 2008-01-30 2009-08-06 Lg Electronics Inc. Method of transmitting precoding information in multiple antenna system
US20100074353A1 (en) * 2008-09-25 2010-03-25 Yongxing Zhou Method of designing codebook for network multiple input multiple output communication system and method of using the codebook

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006117665A1 (en) 2005-05-04 2006-11-09 Nortel Networks Limited Wireless feedback system and method
KR100996023B1 (en) * 2005-10-31 2010-11-22 삼성전자주식회사 Apparatsu and method for transmitting/receiving of data in a multiple antenna communication system
KR101231357B1 (en) * 2006-04-06 2013-02-07 엘지전자 주식회사 Channel status information feedback method and data transmission method for multiple antenna system
KR20070113967A (en) * 2006-05-26 2007-11-29 엘지전자 주식회사 Phase shift based precoding method and tranceiver supporting the same
US20080219370A1 (en) * 2007-03-06 2008-09-11 Texas Instruments Incorporated User equipment feedback structures for mimo ofdma
KR101285595B1 (en) 2007-03-16 2013-07-15 퍼듀 리서치 파운데이션 Aparatus for generating precoding matrix codebook for mimo system and method for the same
MY148998A (en) 2007-04-30 2013-06-28 Interdigital Tech Corp Feedback signaling error detection and checking in mimo wireless communication systems
US7649831B2 (en) * 2007-05-30 2010-01-19 Samsung Electronics Co., Ltd. Multi-user MIMO feedback and transmission in a wireless communication system
KR101478362B1 (en) 2007-08-10 2015-01-28 엘지전자 주식회사 Method for transmitting feedback data in multiple antenna system
KR20090016374A (en) 2007-08-10 2009-02-13 엘지전자 주식회사 Method for transmitting control signal in multiple antenna system and method for transmitting channel information in the same
US20090046801A1 (en) 2007-08-14 2009-02-19 Interdigital Technology Corporation Method and apparatus for creating a multi-user mimo codebook using a single user mimo codebook
US8630184B2 (en) * 2007-08-15 2014-01-14 Qualcomm Incorporated Uplink control channel format
US20090122857A1 (en) 2007-11-09 2009-05-14 Interdigital Patent Holdings, Inc. Method and apparatus for performing rank overriding in long term evolution networks
KR100991794B1 (en) * 2007-12-31 2010-11-03 엘지전자 주식회사 Method For Reducing Inter-Cell Interference
US8140944B2 (en) * 2008-01-24 2012-03-20 Texas Instruments Incorporated Interleaver design with unequal error protection for control information
KR20090101804A (en) 2008-03-24 2009-09-29 엘지전자 주식회사 Open-loop spatial multiplexing for 4tx system with rank adaptation
US8811353B2 (en) 2008-04-22 2014-08-19 Texas Instruments Incorporated Rank and PMI in download control signaling for uplink single-user MIMO (UL SU-MIMO)
KR20100005649A (en) 2008-07-07 2010-01-15 엘지전자 주식회사 A precoding method using multi-codebook
EP2159950B1 (en) * 2008-08-11 2016-04-27 LG Electronics Inc. Method and apparatus for transmitting uplink signals using multi antenna
KR101573072B1 (en) 2008-08-27 2015-12-01 엘지전자 주식회사 Method of transmitting control information in wireless communication system
KR20100066298A (en) 2008-12-09 2010-06-17 엘지전자 주식회사 Reference signal transmission method for downlink multiple input multiple output system
KR101547286B1 (en) 2009-01-12 2015-08-25 인텔렉추얼디스커버리 주식회사 Codebook based transmission apparatus and method in MIMO system
KR101608779B1 (en) 2009-02-13 2016-04-20 엘지전자 주식회사 Uplink Precoding Method In 2 Tx System
CN101631004B (en) * 2009-08-10 2014-05-28 中兴通讯股份有限公司 Pre-coding method and pre-coding system and construction method of pre-coding code book
WO2011126447A1 (en) * 2010-04-07 2011-10-13 Telefonaktiebolaget L M Ericsson (Publ) A precoder structure for mimo precoding
US8693421B2 (en) * 2010-09-02 2014-04-08 Texas Instruments Incorporated Downlink 8 TX codebook sub-sampling for CSI feedback
KR101875609B1 (en) 2010-09-26 2018-08-02 엘지전자 주식회사 Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna
US9143212B2 (en) * 2013-02-25 2015-09-22 Texas Instruments Incorporated Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO
US9647735B2 (en) * 2013-05-31 2017-05-09 Intel IP Corporation Hybrid digital and analog beamforming for large antenna arrays

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094281A1 (en) * 2006-10-24 2008-04-24 Nokia Corporation Advanced codebook for multi-antenna transmission systems
US20090189812A1 (en) * 2008-01-25 2009-07-30 Samsung Electronics Co., Ltd. System and method for multi-stage antenna training of beamforming vectors
WO2009096708A1 (en) * 2008-01-30 2009-08-06 Lg Electronics Inc. Method of transmitting precoding information in multiple antenna system
US20100074353A1 (en) * 2008-09-25 2010-03-25 Yongxing Zhou Method of designing codebook for network multiple input multiple output communication system and method of using the codebook

Also Published As

Publication number Publication date
EP3920427A2 (en) 2021-12-08
KR101817724B1 (en) 2018-02-21
CN105846878B (en) 2019-04-05
CN105846878A (en) 2016-08-10
JP2013533653A (en) 2013-08-22
EP3920427B1 (en) 2024-06-26
RU2012151312A (en) 2014-06-10
EP2564518B1 (en) 2022-03-16
JP6005036B2 (en) 2016-10-12
CA2797844A1 (en) 2011-11-03
ZA201209092B (en) 2014-05-28
US9876553B2 (en) 2018-01-23
EP2564518A4 (en) 2017-08-09
CN102959878B (en) 2016-08-03
RU2571554C2 (en) 2015-12-20
WO2011136627A2 (en) 2011-11-03
CA2797844C (en) 2018-06-05
KR20110121541A (en) 2011-11-07
EP3920427A3 (en) 2022-01-26
AU2011245813A1 (en) 2012-11-22
US20110268207A1 (en) 2011-11-03
CN102959878A (en) 2013-03-06
EP2564518A2 (en) 2013-03-06
AU2011245813B2 (en) 2015-07-30

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